CN114914736A - Electric connector and manufacturing method thereof - Google Patents

Abstract

An electrical connector and a manufacturing method thereof, comprising a first row of conductive terminals of the electrical connector, a second row of conductive terminals arranged on the first row of conductive terminals, a For the metal clip, the insulating body is injection molded on the two rows of conductive terminals and the metal clip, the first row of conductive terminals includes a pair of first ground terminals and a first terminal located between the pair of first ground terminals, The second row of conductive terminals includes second terminals located between a pair of first ground terminals and laterally displaced from the first terminals. In the semi-finished electrical connector, the first row of conductive terminals and the second row of conductive terminals are both connected to a The first material belt, the lateral sides of the pair of metal clips are connected to each other by a second material belt, and the second material belt is stacked against one side of the first material belt in the up-down direction to make the pair of metal buckles The upper and lower parts respectively correspond to the same side of the pair of first ground terminals, thereby effectively simplifying the manufacture of the electrical connector.

Description

Electrical connector and method of making the same

【Technical field】

The present invention relates to an electrical connector and a manufacturing method thereof, in particular to an electrical connector that can be inserted in forward and reverse directions and a manufacturing method thereof.

【Background technique】

Existing USB Type-C connector sockets generally include an insulating body, upper and lower rows of conductive terminals held in the insulating body, and metal clips located between the two rows of conductive terminals. In order to fix the upper and lower rows of conductive terminals and metal clips, the current common practice is to use multiple molding and assembly methods. However, since multiple moldings are required to form the insulating body, the structure of the insulating body is complicated, resulting in low production efficiency and increased manufacturing cost.

Therefore, it is necessary to improve the existing electrical connectors to overcome this defect.

[Content of the invention]

The purpose of the present invention is to provide an electrical connector with a simple structure and convenient production.

The object of the present invention is achieved through the following technical solutions: an electrical connector, comprising an upper and lower terminal group with a first row of conductive terminals and a second row of conductive terminals arranged in the up-down direction, and arranged in the first row in the up-down direction. a pair of metal clips between the conductive terminals and the second row of conductive terminals and arranged at intervals in the transverse direction perpendicular to the up-down direction, an insulating body injection-molded outside the upper and lower terminal groups and the pair of metal clips, The first row of conductive terminals includes a pair of first ground terminals on both sides in the lateral direction and a first terminal between the pair of first ground terminals, and the second row of conductive terminals includes a pair of first ground terminals in the lateral direction. The second terminal between the first ground terminals and laterally displaced from the first terminal, in the semi-finished product of the electrical connector, the first row of conductive terminals and the second row of conductive terminals are both connected to a The first material belt, the outer sides of the pair of metal clips in the transverse direction are connected to each other by a second material belt, and the second material belt is stacked against one of the first material belts in the up-down direction. side so that the pair of metal clips respectively correspond to the same side of the pair of first ground terminals in the up-down direction.

Further, the insulating body includes a base and a tongue plate extending forward from the base, and a pair of the metal clips includes a main body fixed in the insulative body and a front end of the main body. The locking portion exposed on the opposite side of the tongue plate, the first row of conductive terminals and the second row of conductive terminals each include a contact portion, a holding portion fixed on the base and a welding portion extending out of the base, so The contact parts of the first row of conductive terminals and the second row of conductive terminals are respectively exposed to the first butt surface and the second butt surface opposite to the tongue plate, and the welding parts of the first row of conductive terminals and the second row of conductive terminals are respectively exposed. Arranged in a row and jointly connected to the first material belt.

Further, the first terminals include a pair of first power terminals located between a pair of the first ground terminals and a first configuration channel terminal located between a pair of the first power terminals, the second The terminal is a second configuration channel terminal, the first butt surface and the second butt surface respectively have twelve terminal positions in the lateral direction, and the terminal positions of the first butt surface and the second butt surface are in the same direction. The left and right are oppositely arranged, a pair of the first ground terminals are respectively located at the first terminal position and the twelfth terminal position of the first butt surface, and a pair of the first power terminals are respectively located at the fourth terminal position of the first butt surface. With the ninth terminal position, the first configuration channel terminal is located at the fifth terminal position of the first mating surface, and the second configuration channel terminal is located at the fifth terminal position of the second mating surface.

Further, the first material tape includes a first portion connected to the welding portions of the first row of conductive terminals and the second row of conductive terminals, and a pair of second portions extending forward from lateral sides of the first portion, A pair of the second portions is coplanar with the first portion and is located laterally outside the pair of the first ground terminals, the second material strip includes a third portion stacked against the first portion, extending from the A pair of fourth portions formed by extending forwardly from lateral sides of the third portion and stacked against a pair of the second portions respectively, and a pair of fourth portions formed by bending upward from each of the fourth portions are connected to the main body The fifth part outside the rear end of the part.

Further, the fifth part is a pair of connecting bridges that are connected to the outer side of the rear end of the main body part and are arranged at intervals in the front and rear.

Further, a pair of the metal clips are stacked and abutted against the same side of the pair of first ground terminals respectively in the up-down direction.

The object of the present invention can also be achieved by the following technical solutions: a method for manufacturing an electrical connector, comprising: a first step, providing a first row of conductive terminals and a second row of conductive terminals disposed above the first row of conductive terminals , the first row of conductive terminals and the second row of conductive terminals are commonly connected to a first material strip, and the first row of conductive terminals includes a pair of first ground terminals located on both lateral sides and a pair of first ground terminals located on both sides. A first terminal between the ground terminals, the second row of conductive terminals includes a second terminal located between a pair of the first ground terminals in the lateral direction and laterally displaced from the first terminals; the second step, Provide a pair of metal clips arranged between the first row of conductive terminals and the second row of conductive terminals in the up-down direction and arranged at intervals in the lateral direction perpendicular to the up-down direction, and a pair of the metal clips in the lateral direction The outer sides in the direction are connected to each other through a second material belt; in the third step, the second material belt is stacked downward against the first material belt. The directions correspond to the upper sides of the pair of first grounding terminals respectively; the fourth step is to provide an insulating body integrally formed on the upper row of conductive terminals, the lower row of conductive terminals and a pair of the metal clips, the The insulating body includes a base and a tongue plate extending forward from the base, the first row of conductive terminals and the second row of conductive terminals include holding parts fixed on the base, respectively exposed to the tongue plate The contact part of the opposite first abutting surface and the second abutting surface, the welding part extending backward from the base, the front ends of a pair of the metal clips are provided with locks exposed to the opposite sides of the tongue plate The buckle part; the fifth step, cutting and removing the first material tape and the second material tape.

Further, the first material tape includes a first portion connected to the welding portions of the first row of conductive terminals and the second row of conductive terminals, and a pair of second portions extending forward from lateral sides of the first portion, The second material strip includes a third part, a pair of fourth parts extending forward from two lateral sides of the third part, and the metal clips formed by bending upward from the fourth part. The fifth part is connected to the outer side of the rear end, in the third step, the third part of the second material belt is stacked down against the upper side of the first part, and a pair of fourth parts are stacked down against the upper side of the first part respectively. On the upper sides of a pair of the second parts, a pair of the metal clips are respectively stacked against the upper sides of the pair of first ground terminals.

Further, the fifth part is a pair of connecting bridges that are connected to the outer side of the rear end of the metal clip and are spaced in the front-rear direction. In the fourth step, a pair of connecting bridges respectively correspond to the base The seat and the lateral sides of the tongue plate.

Further, in the fourth step, the first part and the third part stacked up and down are located behind the insulating body, and the second part and the fourth part stacked up and down are located on both lateral sides of the insulating body.

Compared with the prior art, the present invention has the following beneficial effects: the first row of conductive terminals and the second row of conductive terminals arranged on the top and bottom of the electrical connector of the present invention are connected to the same first material strip, wherein the first row of conductive terminals includes a For the first ground terminal and the second row of conductive terminals without ground terminals, a pair of metal clips arranged between the upper and lower rows of conductive terminals are arranged on the same side of the first row of conductive terminals, and the pair of metal clips A second material tape is connected to the lateral outer side, and the second material tape is stacked downward against the first material tape. At this time, a pair of metal clips are arranged on a pair of first grounding terminals of the first row of conductive terminals This not only simplifies the assembly process of the two rows of conductive terminals and the metal clips, but also enables the insulating body to be wrapped around the two rows of conductive terminals and the metal clips by one-time molding, thereby reducing the manufacturing cost of the electrical connector .

【Description of drawings】

FIG. 1 is a perspective view of the electrical connector of the present invention.

FIG. 2 is a perspective view of FIG. 1 from another perspective.

Figure 3 is an exploded view of the electrical connector of the present invention.

FIG. 4 is an exploded view of FIG. 3 from another perspective.

Figure 5 is a further exploded view of the electrical connector of the present invention.

FIG. 6 is an exploded view of FIG. 5 from another perspective.

FIG. 7 is a cross-sectional view taken along line A-A of FIG. 1 .

FIG. 8 is a cross-sectional view taken along line B-B of FIG. 1 .

FIG. 9 is a cross-sectional view taken along line C-C of FIG. 1 .

10 is a perspective view showing that the upper and lower rows of conductive terminals and the metal clips of the electrical connector of the present invention are connected to the material strips, wherein the material strips of the upper and lower rows of conductive terminals and the metal clips are not stacked.

11 is a perspective view of the connection between the upper and lower rows of conductive terminals and the metal clips of the electrical connector of the present invention, wherein the upper and lower rows of conductive terminals and the metal clips are stacked.

FIG. 12 is a perspective view of an insulating body integrally formed on the basis of FIG. 11 .

The following specific embodiments will further illustrate the present invention in conjunction with the above drawings.

【Detailed ways】

Referring to FIGS. 1 to 9 , the electrical connector 100 of the present invention is a USB Type C that can be inserted into a docking plug connector (not shown) in forward and reverse directions along the front-rear direction (ie, the plug-in direction). socket connector. The electrical connector 100 includes an upper and lower terminal group 2 having a first row of conductive terminals 21 and a second row of conductive terminals 22 arranged in the up-down direction, and an upper and lower terminal group 2 arranged in the up-down direction on the first row of conductive terminals 21 and the second row of conductive terminals 22 . A pair of metal clips 3 arranged at intervals between the rows of conductive terminals 22 and in the transverse direction perpendicular to the up-down direction, and an insulating body 1 that is injection-molded on the upper and lower terminal groups 2 and the pair of metal clips 3 and a shielding shell 4 sleeved on the outside of the insulating body 1 .

The insulating body 1 includes a base 11 and a tongue plate 12 integrally extending forward from the base 11 . The holding part 202 in the base 11 and the welding part 203 extending out of the base 11 . The shielding shell 4 is enclosed and fixed on the base 11 and together with the tongue plate 12 forms a docking cavity 40 into which a docking connector (not shown) is inserted. The two sides of the shielding shell 4 are provided with solder pins 41 soldered to the circuit board (not shown). The front end of the base 11 is concavely provided with a first concave portion 111 , the rear end of the base 11 is concavely provided with a second concave portion 112 , and the wall surface of the shielding shell 4 is torn to form a receiving portion 112 . The first stopper portion 42 of the first recessed portion 111 and the second stopper portion 43 located in the rear end of the first stopper portion 112 and accommodated in the second recessed portion 112, the first stopper portion 43 The blocking portion 42 is used to limit the forward movement of the insulating body 1 , and the second blocking portion 43 is used to limit the backward movement of the insulating body 1 . The tongue plate 12 includes a first abutting surface 121 and a second abutting surface 122 opposite in the up-down direction. The contact portions 201 of the first row of conductive terminals 21 are exposed to the first abutting surface 121, and the second row The contact portions 201 of the conductive terminals 22 are exposed to the second mating surface 122 , and the first row of the conductive terminals 21 and the welding portions 203 of the second row of the conductive terminals 22 are arranged in a row. The tongue plate 12 further includes a pair of side surfaces 123 opposite in the lateral direction, and the front ends of the pair of metal clips 3 respectively have locking portions 32 laterally exposed to the pair of side surfaces 123 . Specifically, the metal clip 3 includes a main body portion 31 embedded and fixed in the insulating body 1 and the locking portion 32 disposed at the front end of the main body portion 31 .

The first row of conductive terminals 21 includes a pair of first ground terminals 211 located on both sides in the lateral direction and a first terminal 23 located between the pair of first ground terminals 211, and the second row of conductive terminals 22 includes a pair of first ground terminals 211 in the lateral direction. The second terminal 24 is located between a pair of first ground terminals 211 and laterally offset from the first terminal 23 , and the first terminal 23 and the second terminal 24 include at least one terminal. In a specific embodiment of the present invention, the first terminals 23 include a pair of first power terminals 231 located between a pair of the first ground terminals 211 and a first power terminal 231 located between the pair of first power terminals 231 The configuration channel terminal 232 is configured, and the second terminal 24 is a second configuration channel terminal 241 . The first abutting surface 121 and the second abutting surface 122 respectively have twelve terminal positions in the lateral direction, and the terminal positions of the first abutting surface 121 and the second abutting surface 122 are arranged in opposite directions. A pair of the first ground terminals 211 are respectively located at the first terminal position and the twelfth terminal position of the first butt surface 121 , and a pair of the first power terminals 231 are respectively located at the fourth terminal of the first butt surface 121 . The position and the ninth terminal position, the first configuration channel terminal 232 is located at the fifth terminal position of the first mating surface 121 , and the second configuration channel terminal 241 is located at the fifth terminal position of the second mating surface 122 .

10 and 11, in the semi-finished product of the electrical connector 100 of the present invention, the first row of conductive terminals 21 and the second row of conductive terminals 22 are both connected to a first material strip 200, a pair of metal clips The fasteners 3 are connected to each other by a second material strip 300 on the outer side in the transverse direction. The second material tape 300 is stacked against one side of the first material tape 200 in the up-down direction, so that a pair of the metal clips 3 respectively correspond to a pair of first ground terminals in the up-down direction 211 on the same side. Specifically, the welding parts 203 of the first row of conductive terminals 21 and the second row of conductive terminals 22 arranged in a row are connected to the first material strip 200 , and the first material strip 200 includes a The first portion 210 of the welding portion 203 of the first row of conductive terminals 21 and the second row of conductive terminals 300 and a pair of second portions 220 integrally extending forward from lateral sides of the first portion 210, a pair of The second portion 220 is coplanar with the first portion 210 and is located laterally outside a pair of the first ground terminals 211 . The second material belt 300 includes a third portion 310 that is stacked against the first portion 210 , and a pair of second portions 220 that extend forward from both lateral sides of the third portion 310 and are stacked respectively. A pair of fourth portions 320 abutting against each other and a fifth portion 330 formed by bending upward from each of the fourth portions 320 and connected to the outer side of the rear end of the main body portion 31 . In the semi-finished product of the electrical connector 100 of the present invention, in addition to the second material strip 300 connected to the pair of the metal clips 3 being stacked against the first material strip 200, further, a pair of the metal clips The fasteners 3 are stacked downward against the same side of the pair of first ground terminals 211 in the up-down direction, respectively. The insulating body 1 is formed by molding the insulating material outside the first row of conductive terminals 21 , the second row of conductive terminals 22 and the pair of metal clips 3 of the semi-finished product at one time. The third part 310 is located behind the base 11 of the insulating body 1 , and a pair of the second parts 220 and a pair of the fourth parts 320 stacked against each other with the pair of second parts 220 are located on the On the lateral outer side of the insulating body 1 , the pair of fifth parts 330 are located inside the pair of fourth parts 320 and are located at the lateral outer side of the insulating body 1 . The first part 210 , the pair of second parts 220 , the third part 310 , the pair of fourth parts 320 and the fifth part 330 are cut and removed, and the shielding shell 4 is sleeved outside the insulating body 1 , A finished product of the electrical connector 100 is thus formed. In the semi-finished product of the electrical connector 100 of the present invention, each of the fifth parts 330 is preferably a pair of connecting bridges 331 which are connected to the outer rear end of the main body part 31 and are arranged at intervals, and the connecting bridges 331 at the front end are located at the The lateral sides of the tongue plate 12, and the connecting bridges 331 located at the rear end are located on the lateral sides of the base 11. While supporting the strength, the flatness of the metal clip 3 can also be ensured, so that the metal clip 3 and the first ground terminal 211 can be stacked stably.

The manufacturing method of the electrical connector 100 of the present invention is as follows: the first step is to provide a first row of conductive terminals 21 and a second row of conductive terminals 22 disposed above the first row of conductive terminals 21, the first row of conductive terminals 21 and all The second row of conductive terminals 22 are commonly connected to a first material strip 200 , and the first row of conductive terminals 21 includes a pair of first ground terminals 211 located on both lateral sides and a pair of first ground terminals 211 located between the pair of first ground terminals 211 . The first terminal 23, the second row of conductive terminals 22 includes a second terminal 24 located between a pair of the first ground terminals 211 in the lateral direction and laterally displaced from the first terminal 23; the second step, A pair of metal clips 3 are provided which are arranged between the first row of conductive terminals 21 and the second row of conductive terminals 22 in the up-down direction and are arranged at intervals in the transverse direction perpendicular to the up-down direction. The outer sides of the pieces 3 in the transverse direction are connected to each other by a second material belt 300; in the third step, the second material belt 300 is stacked down against the first material belt 200. At this time, a pair of all The metal clips 3 respectively correspond to the upper side of the pair of first grounding terminals 211 in the up-down direction; the fourth step is to provide the upper row of conductive terminals 21, the lower row of conductive terminals 22 and a pair of the The insulating body 1 outside the metal clip 3 includes a base 11 and a tongue plate 12 extending forward from the base 11 , the first row of conductive terminals 21 and the second row of conductive terminals 22 includes a holding portion 202 held on the base 11 , a contact portion 201 exposed to the first abutting surface 121 and the second abutting surface 122 opposite to the tongue plate 12 , and a rearward extending out of the base 11 . The welding part 203, the front end of the pair of the metal clips 3 is provided with the locking part 32 exposed to the opposite side 123 of the tongue plate 12; the fifth step is to cut and remove the first material strip 200 and all The second material tape 300 is described; in the sixth step, a metal shielding shell 4 is provided, and the shielding shell 4 is sleeved outside the insulating body 1 . The first material strip 200 includes a first portion 210 connected to the welding portion 203 of the first row of conductive terminals 21 and the second row of conductive terminals 22 and a pair of first portions 210 extending forward from lateral sides of the first portion 210 . Two parts 220 , the second material strip 300 includes a third part 310 , a pair of fourth parts 320 extending forward from two lateral sides of the third part 310 and bending upward from the fourth part 320 The fifth part 330 is formed and connected to the outer side of the rear end of the metal clip 3. In the third step, the third part 310 of the second material strip 300 is stacked downward against the upper part of the first part 210. side, a pair of fourth parts 320 are stacked down against the upper side of the pair of second parts 220 respectively, and a pair of the metal clips 3 are stacked against the upper side of the pair of first ground terminals 211 respectively side. The fifth part 330 is a pair of connecting bridges 331 that are connected to the outer rear end of the metal clip and are spaced in the front-rear direction. In the fourth step, a pair of connecting bridges 331 correspond to the base The seat 11 and the lateral sides of the tongue plate 12 . In the fourth step, the vertically stacked first part 210 and the third part 310 are located behind the insulating body 1 , and the vertically stacked second part 220 and the fourth part 320 are located on the lateral sides of the insulating body.

The above are only some embodiments of the present invention, not all of the embodiments. It should be noted that the technical point of the present invention is that the upper and lower rows of conductive terminals are connected by a first material strip, and the lower row of conductive terminals has a pair of first grounding The terminal and the upper row of conductive terminals do not have a ground terminal. The second material strip connected to the lateral outer side of the pair of metal clips is stacked downward against the first material strip. At this time, the pair of metal clips abuts downward. On the pair of first grounding terminals, finally, the insulating material is formed by only one injection molding outside the two rows of conductive terminals and the pair of metal clips to form an insulating body. The invention not only simplifies the assembly process of the two rows of conductive terminals and the metal clips, but also enables the insulating body to be wrapped around the two rows of conductive terminals and the metal clips by one-time molding, thereby reducing the manufacturing cost of the electrical connector.

Claims (10)

1. An electric connector comprises an upper terminal group and a lower terminal group which are arranged in the up-down direction and provided with a first row of conductive terminals and a second row of conductive terminals, a pair of metal buckling pieces which are arranged between the first row of conductive terminals and the second row of conductive terminals in the up-down direction and are arranged at intervals in the transverse direction vertical to the up-down direction, and an insulating body which is formed by injection molding and arranged outside the upper terminal group and the lower terminal group and the pair of metal buckling pieces, and is characterized in that: the first row of conductive terminals comprise a pair of first grounding terminals located on two transverse sides and a first terminal located between the pair of first grounding terminals, the second row of conductive terminals comprise a second terminal located between the pair of first grounding terminals in the transverse direction and transversely staggered with the first terminal, in a semi-finished product of the electric connector, the first row of conductive terminals and the second row of conductive terminals are connected to a first material belt, the outer sides of the metal buckling pieces in the transverse direction are connected with each other through a second material belt, and the second material belt is stacked and abutted against one side of the first material belt in the up-down direction so that the pair of metal buckling pieces respectively correspond to the same side of the pair of first grounding terminals in the up-down direction.

2. The electrical connector of claim 1, wherein: the insulating body comprises a base and a tongue plate extending forwards from the base, the pair of metal fasteners comprise a main body part fixed in the insulating body and a locking part positioned at the front end of the main body part and exposed on the opposite side surfaces of the tongue plate, the first row of conductive terminals and the second row of conductive terminals respectively comprise contact parts, a fixing part fixed in the base and a welding part extending out of the base, the contact parts of the first row of conductive terminals and the second row of conductive terminals are respectively exposed on a first butt joint surface and a second butt joint surface opposite to the tongue plate, and the welding parts of the first row of conductive terminals and the second row of conductive terminals are arranged in a row and are connected to the first material belt together.

3. The electrical connector of claim 2, wherein: the first terminal includes a pair of first power terminals between a pair of the first ground terminals and a first configuration channel terminal between a pair of the first power terminals, the second terminal is a second configuration channel terminal, the first mating surface and the second mating surface each having twelve terminal positions in a transverse direction, the first and second mating surfaces have opposite terminal positions, a pair of first ground terminals are located at first and twelfth terminal positions of the first mating surface, a pair of first power terminals are located at fourth and ninth terminal positions of the first mating surface, the first configuration channel terminal is located at a fifth terminal position on the first butting surface, and the second configuration channel terminal is located at a fifth terminal position on the second butting surface.

4. The electrical connector of claim 2, wherein: the first material belt comprises a first part connected to the welding part of the first row of conductive terminals and the second row of conductive terminals and a pair of second parts formed by extending forwards from two transverse sides of the first part, the pair of second parts and the first part are coplanar and are positioned at the transverse outer sides of the pair of first grounding terminals, the second material belt comprises a third part abutted against the first part in a stacking manner, a pair of fourth parts formed by extending forwards from two transverse sides of the third part and abutted against the second part in a stacking manner respectively, and a fifth part formed by bending upwards from each fourth part and connected to the outer side of the rear end of the main body part.

5. The electrical connector of claim 4, wherein: the fifth part is a pair of connecting bridges which are connected with the outer side of the rear end of the main body part and are arranged at intervals in the front and the rear.

6. The electrical connector of claim 4, wherein: the pair of metal buckling pieces are respectively stacked and abutted to the same side of the pair of first grounding terminals in the vertical direction.

7. A method of manufacturing an electrical connector, comprising:

the method comprises the following steps that firstly, a first row of conductive terminals and a second row of conductive terminals arranged above the first row of conductive terminals are provided, the first row of conductive terminals and the second row of conductive terminals are connected to a first material belt together, the first row of conductive terminals comprise a pair of first grounding terminals positioned on two transverse sides and a first terminal positioned between the pair of first grounding terminals, and the second row of conductive terminals comprise a second terminal which is positioned between the pair of first grounding terminals in the transverse direction and is transversely staggered with the first terminal;

a second step of providing a pair of metal buckling pieces which are arranged between the first row of conductive terminals and the second row of conductive terminals in the vertical direction and are arranged at intervals in the transverse direction perpendicular to the vertical direction, wherein the outer sides of the pair of metal buckling pieces in the transverse direction are connected with each other through a second material belt;

thirdly, stacking a second material belt downwards to abut against the first material belt, wherein at the moment, the pair of metal buckling pieces respectively correspond to the upper sides of the pair of first grounding terminals in the vertical direction;

fourthly, providing an insulating body which is integrally formed outside the upper row of conductive terminals, the lower row of conductive terminals and the pair of metal buckling pieces, wherein the insulating body comprises a base and a tongue plate which extends forwards from the base, the first row of conductive terminals and the second row of conductive terminals comprise a fixing part which is fixed on the base, a contact part which is respectively exposed on a first butt joint surface and a second butt joint surface which are opposite to the tongue plate, and a welding part which extends backwards out of the base, and the front end of each pair of metal buckling pieces is provided with a locking part which is exposed on the opposite side surface of the tongue plate;

and fifthly, cutting and removing the first material belt and the second material belt.

8. The method of manufacturing an electrical connector of claim 7, wherein: the first material belt comprises a first part connected to the welding part of the first row of conductive terminals and the second row of conductive terminals and a pair of second parts formed by extending forwards from two transverse sides of the first part, the second material belt comprises a third part, a pair of fourth parts formed by extending forwards from two transverse sides of the third part and a fifth part formed by bending upwards the fourth parts and connected with the outer side of the rear end of the metal buckle part, in the third step, the third part of the second material belt is downwards stacked and abutted against the upper side of the first part, the pair of fourth parts are downwards stacked and abutted against the upper sides of the pair of second parts, and the pair of metal buckle parts are respectively stacked and abutted against the upper sides of the pair of first grounding terminals.

9. The method of manufacturing an electrical connector of claim 8, wherein: the fifth part is a pair of connecting bridges which are connected to the outer side of the rear end of the metal buckle piece and are arranged at intervals in the front-rear direction, and in the fourth step, the pair of connecting bridges respectively correspond to the base and the two transverse sides of the tongue plate.

10. The method of manufacturing an electrical connector of claim 8, wherein: in the fourth step, the first part and the third part which are stacked up and down are positioned at the rear of the insulating body, and the second part and the fourth part which are stacked up and down are positioned at the two transverse sides of the insulating body.

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